<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<div id="app">
			<h2 v-if="score>=90">
				优秀
			</h2>
			<h2 v-else-if="score>=80">
				良好
			</h2>
			<h2 v-else-if="score>=60">及格</h2>
			<h2 v-else>不及格</h2>
			<h1>{{result}}</h1>
		</div>
		
		<script src="../js/vue.js"></script>
		<script>
			const app=new Vue({
				el:'#app',
				data:{
					score:99
				},
				computed:{
					result(){
						let showMessage='';
						if (this.score>=90) {
							showMessage='优秀'
						} else if(this.score>=80){
							showMessage='良好';
						}else if(this.score>=60){
							showMessage='及格';
						}else{
							showMessage='不及格';
						}
						return showMessage;
					}
				}
			})
		</script>
	</body>
</html>
